Introducing Grok 4.3 on Microsoft Foundry: Latest Generation Agentic Capabilities

Customers building advanced AI systems increasingly need models that can reason deeply, act autonomously, and integrate reliably into real‑world workflows—all without compromising on governance or cost efficiency. Grok 4.3, xAI’s latest flagship model, is now available in Microsoft Foundry, giving developers and enterprises access to latest agentic intelligence within a production‑ready environment designed for scale. 

With Grok 4.3 on Microsoft Foundry, customers can more easily experiment with, evaluate, and deploy a powerful new option for agent‑based and domain‑specific applications—while benefiting from the safety controls, monitoring, and operational tooling needed to move from prototype to production with confidence. 

About Grok 4.3 

Grok 4.3 is xAI’s latest flagship model, designed to support agent-based and productivity-focused workflows across a wide range of professional scenarios. Based on information provided by xAI and independent research conducted by Artificial Analysis, Grok 4.3 demonstrates strong performance across multiple benchmarks, reflecting a favorable balance between model capability and reported benchmark cost. 

*Benchmark data and cost metrics are provided by xAI and independently analyzed by Artificial Analysis. 
Source: https://artificialanalysis.ai 

Improved agentic capabilities 

Grok 4.3 is purpose‑built for agentic systems, improving in tool calling, instruction following, and lower hallucination, as reported by xAI. Grok 4.3 also enables policy‑aware support agents with reliable tool use and consistent behavior across extended conversations. On Microsoft Foundry, Grok 4.3 supports up to a 200k token context window, enabling extended multi‑turn reasoning and agent workflows.

Multi-modal and domain‑specific strengths 

Grok 4.3 delivers strong performance across a range of professional and technical domains: 

• Multimodal analysis: Native understanding across text, images, diagrams, and mixed data sources, enabling synthesis of visual and textual information for complex reasoning tasks.  

• Web development: Excels in full‑stack web development, producing clean, production‑ready code with minimal guidance.  

• Legal reasoning: supports interpretation of contracts, case law, and regulatory documents.  

• Finance agents: supports financial analysis, modeling, and human decisions 

Built‑In Native Capabilities 

Grok 4.3 includes powerful native capabilities that simplify real‑world application development: 

• Web search and X search for real‑time context 

• Python code execution for analysis and automation 

• File search (RAG) for enterprise knowledge grounding 

• Excel, PDF, and PowerPoint generation for end‑to‑end workflows 

Together, these capabilities allow Grok 4.3 to function as a powerful agentic productivity engine, not just a language mode. 

Why Grok 4.3 on Microsoft Foundry 

Bringing Grok 4.3 to Microsoft Foundry delivers value beyond raw model performance. When deployed through Foundry, Azure AI Content Safety is enabled by default, adding an additional layer of protection for enterprise use. Customers can review the Microsoft Foundry model card for detailed safety and usage considerations. 

Microsoft Foundry also provides tools to support our customers with their responsible AI efforts, including model cards during selection, configurable guardrails such as jailbreak detection and content filtering, pre‑deployment evaluations and red teaming, and post‑deployment monitoring and governance. These capabilities help customers maintain output quality and deploy Grok 4.3 responsibly at scale. 

Pricing  

Getting started 

Grok 4.3 is now available in Microsoft Foundry. Explore the model details in the Foundry model catalog, evaluate it using your own datasets, and start building and deployment in minutes.